Improvement in combined latch and lock



` initd glatte To all lwhom it may concern:

@me can.

JAMES HALLEN AND JOHN sCHWA-e'or LOUISVIL:LE, KENTUCKY.

Letters Patent No. 94,172, dated August 31, 1869.

IMPROVEMENT'IN COMBINED LATCH .AND LOCK.

The Schedule referred to in these Letters Patent andmaking part ofthe same.'

Beit known that we, J AMES H. ALLEN and J ons SCHWAB, of the city of Louisville, county of Jefferson, and State of Kentucky, have invented a new and useful Improvement in Burglar-Proof Locks; and we do hereby declare that the following is a full, clear", and exact description thereof, reference being yhad to the accompanying drawings, and to the letters of' reference marked thereon.

lThe nature of ouriuvention consists in constructing a 1ock,.of the ordinary size and shape, but with ltwo key-holes, one .inside and the 'other outside, and having the catch or bolt made fsufiiciently, strong to answer as a bolt, when locked, or a'catclx,-when not locked. Immediately underthis bolt there is a crossbar, made thick enough to tthe inside of the lock neatly, with the top cut out, so as to permit the bolt to pass over it loosely, with room for it to vibrate, and is held in its place by a pin in the bottom of the lock, on which it vibrates, the inside, next to the key, being hollowed ont to suit it, and the bolt of the lock, bein'galrea'dy thrown out in position, by the spring behind it,'in the saine'ma'nner as the common knoblock, and, when the key is turned, it moves one end of the cross-bar'v round against the shoulder of the bolt and locks it, while the other end completely closes up the key-hole in the other side, and is held securely in that position by a spring immediately under it, having two small catches in the middle, which enters corresponding holes -in the cross-bar, Iand prevents it trom turning, and while in that position, no power or explosive substance or key could be introducedto open it, neither would the key be of any service to a per son notknowing how to use it, as it would turn round without effecting the object intended. In order to unlock it, it is onlyv necessary to place the key in the to the letters of reference marked thereon, in which--`v Figure l is a perspective view of thelock, showing lthe arrangement of the inside works.

A is the lock; Bj is the cross-bar; C isk the bolt or catch, all of which are made of cast-iron or other material.

D is the key.

E is the spring under the cross-bar, and is made of spring-steel.

K K K .K are the screws which hold on the-top or cover, and also-fasten the lock to the door.

Figure 2 is a View of the top or cover, showing the arrangement of the key-holes. y

Figure 3 is a' view of the cross-bal' B, showing the hole L, and how it is cut out in the top andat the,

side.

Figure 4 is a viewof the steel spring E, which locks the cross-bar B, showing the catches F F and the hole M.

Figure 5 is a view of the bolt or catch C, showing its shapeand general construction.

vFigure 6 is a-view of the tumbler G, by which the y bolt is operated.

Figurey 7 is a view of the bottom.l of thel lock A,

showing the depression in the bottom for the spring E and thepin N, ou which the cross-bar B turns, anc also how the key-holes are arranged.

v Figure 8 is a View of the spring I, showing its shape.

The above is a full description of the above improvement, and is operated by turning the key D, as in the ordinary lock, which locks it, but in order tounlock it, the key must be set in` the position it occupies in the drawing, and by pressing against it with one hand, while, with the other, turn the knob H, which replaces the'cross-bar B in its former position, permitting the bolt C to be drawn back at pleasure. Therefore,

What wefclaim as our improvement, and desire to secure by Letters yPatent, is

1. The bolt G, in combination with the cross-bar B, springs E I, and a casing, having key-holes J J, when constructed and arranged to serve, both as a lock-bolt andas a knobbolt,and operated substan- H, and the steelspring I, When'arranged, constructed,

operated, and used in the manner set forth. JAMES H. ALLEN. JOKHN SCHWAB;

Witnesses:

W. F. SPYBEY, W. H. LnsooMBn. 

